Water-jacket.



PATENTED MAR. 13, 1906.

C. W. HAWKES. WATER JACKET.

APPLIOATIOR FILED man. 1905.

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Us ITED STATES PATENT OFFICE.

WATER-JACKET.

Specification of Letters Patent.

Patented March 13, 1906.

Original application filed November 18, 1904,8erie1 No. 233,301. Divided and this application filed February 11, 1965.. Serial No. 245,288.

To all whom it may concern:

Be it known that I, CHARLES WILLIAM Hswnns, a citizen of the United States, ro-

siding at Springfield, in the county of Sangemon and State of Illinois, have invented certain new and useful Im rovements in Water Jackets, of which the fo lowing is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in water-jackets for cupola, blast, and similar furnaces; and it consists in the novel construction of jacket more fully set forth in the specification and ointed out in the claims.

In the drawings, igure l is a longitudinal section on the line i 1 of Fig. 2. Fig. 2 is an elevation of onedialf of the jacket broken above the twyers. Fig. 3 is a sectional detail showing the main form of welded stay-bolt. Fig. 4 is a sectional view showing the applica tion of a stay-bolt to the inside sheet under one process of welding, and Fig. 5 is a sectional detail showin a stay-bolt attached to the inside sheet unrfer a modified process of welding.

The present application is a division pendin application on water-jackets originally filed under date of November 18, 1904, Serial No. 233,301, being restricted to those features in the original which were directed to the mechanical details entering into the construction of the inside and outside sheets of the jacket.

The object of the invention is to construct a water-jacket in which the element of leakage and consequent delay resulting therefrom shall be wholly eliminated, the inner wall of the jacket presenting an uninterrupted, unbroken, and seamless surface to the ore charge, so that the starting of a leak is im ossible.

A rther oh'ect is to produce an economical, cheap, an durable construction, all as will more fully appear from a detailed description of the invention, which is as follows:

Referring to the drawings, 1 re resents the inside sheet, and 2 the outside s set, of the water-jacket. In-the present invention I eliminate any and all rivet-heads from the inside sheet. This I-accornplish by welding to the inside sheet what constitutes staybolts in the revailin forms of construction. Such welde stay-b0 ts are represented by of my the reference-numeral 3 in the drawings. The outer ends of said welded belts are assed throu' h the outside sheet and prefer-ab y riveted t ereto, a suitable spacing piece or thimble 4 being previously assed over the bolt. The manner of welding t :estay-bolt to the inside sheet is illustrated in Fig. 4. The sheet is first punched with a hole sufficient to re= ceive the end of the stay-bolt, the latter being limited by an annular shoulder 5. When the arts are thoroughly welded, the head of the olt is expanded into the depression 6, re sulting from the formation of the hole, and the metal of the shoulder 5 disap ears in or merges with that of the sheet, an we have a final construction, as shown in Fig. 3, the bolt being for all intents and purposes an integral part of the sheet.

Another method of welding (that by electricity) is illustrated in Fig. 5, where the bolt 3 is placed squarely against the original sheet along an original line of demarcation, (shown by the dotted line in said figure) when upon the conclusion of the welding operation the bolt becomes an integral part of the inside sheet. The welding of the staybolts to the inside sheet leaves the inner surface of the latterthat is, the surface exposed to the charge-smooth, uninterru ted, and seamless, so that the danger of lea age is entirely eliminated. Thus the present acket in no wise presents any rivet-heads to either the charge in the furnace or to the water in the jacket, and leakage is practically impossible. The consequence is a prolonged life for the acket and economy in the operating expenses of the furnace, since repairs are seldom necessary while the furnace its in operation.

I may of course depart from the details of construction here shown without in any wise allectin the nature or spirit of my invention. These details have reference more particularly to the connections between the welded bolts and the outside sheet, and while in the present case the outer ends of the bolts are shown as passing through the outside sheet and riveted thereto it is a parent that they need not necessarily pass t erethrough, but may on age said sheet from the inside. Neither do imit m self to any particular configuration for such stay-bolt, an equivalent formation falling within the spirit of my invention. The details of the construction of the twyer O are not herein re ferred to, as they form the subject-matter of the ending application aforesaid.

'le the invention is herein specifically directed to water-j aokets for furnaces, it is to be understood that in its application it is not restricted thereto, but may be used in boiler and other constructions as well, the in- Vention in its broad contemplation covering a structural member or sheet having bolts welded thereto or otherwise formed integrally therewith.

Having described my invention, what I claim is 1. A water-jacket comprising an inside and an outside sheet, a series of stay-bolts having one of their ends welded to the inside sheet, and their opposite ends passed through and riveted on the outside to the outside sheet, substantialy as set forth.

2. A water-jacket comprising an inside and an outside sheet, a series of stay-bolts welded to the inside sheet and having their free ends passed through and riveted to the outside sheet, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES WILLIAM HAWKES.

Witnesses:

THOMAS H. PAGE, GEo. M. SwrTzER. 

